Variation in Seed Quality Paramertes of Off-Season Soybean of Different Planting Dates and Varieties

The work was carried out to assess the effect of varieties and dates of sowing on seed quality parameters of soybean seed produced during off-season i.e., Rabi at Rajendranagar. The seeds of varieties AISb-50, Basara and JS-335 were used for estimation of seed quality parameters which were sown on 15th December and 15th January. The seed quality parameters differed significantly due to dates of sowing and varieties. The treatment sum of squares revealed a significant difference in germination, seedling vigour index-I, seedling dry weight, speed of germination and field emergence, whereas seedling length was non-significant for varieties. While the seedling vigour index-II and electrical conductivity showed non-significant variation in the interaction between varieties and dates of sowing. The 15th December sown crop showed higher germination (91.11%), seedling length (27.63 cm), seedling vigour index-I (2518), dry weight (95.90 mg), seedling vigour index-II (8713), speed of germination (25.05) and field emergence (89.22%). The variety JS-335 exhibited higher germination (92.83%), seedling length (27.55cm), vigour index I (2558), speed of germination (28.25%), while higher seedling dry weight and vigour index II was exhibited by Basara (94.86 mg and 8097). The amount of leachates was found in Basara with electrical conductivity of 23.82 µScm-1g-1. The interaction between dates of sowing and varieties revealed that the variety JS-335 of 15th December sown exhibited higher germination (95.33%), seedling length (28.43 cm), seedling vigour index I (2711), speed of germination (29.97) among other varieties. The variety Basara of 15th December sown crop showed higher seedling dry weight (103.93 mg) and seedling vigour index II (8936). The electrical conductivity was higher in case of Basara of 15th January (24.59 µScm-1g-1).